A more thorough explanation:

Definition: Law in action refers to the application of the law in real-life situations, as opposed to the law that is written in books. It is the way that the legal system works on a day-to-day basis.

For example, if someone is accused of a crime, the law in action would be the process of investigating the crime, gathering evidence, and presenting the case in court. This is different from the law in books, which would be the specific laws and statutes that apply to that particular crime.

Another example of law in action would be a contract dispute between two parties. The law in action would be the process of negotiating a settlement or going to court to resolve the dispute. This is different from the law in books, which would be the specific laws and regulations that govern contracts.

Overall, law in action is the practical application of the law in real-life situations, and it is an important part of the legal system.